Introduction
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The essential characteristic of cables is that they are **flexible structures**, whose mechanical analysis is **non-linear** because they are likely to undergo **large displacement**. They are affected during the **pose** operation, when arrows are adjusted to respect environmental constraints.

Subsequently, the cables can be animated by **large-amplitude movements** under the impulse of **wind** pressure, the fall of **frost sleeves** or, in the event of an incident, Laplace forces resulting from **short circuit** currents. They then exert much greater forces on their supports than static forces. This must be taken into account in the design of structures.

For old structures, which may be subject to increased short circuit intensities due to the extension of the network, it must be checked that reliability is still ensured.